idea- new single player mode, but this time you defend

How about some "built-in" single player levels where your defence is attacked by an AI army, each one stronger than the last?

another idea: a "puzzle mode" single player where instead of choosing what to train you are given a specific army and you have to use that given army to destroy a base. Or you are given a base and you have to rearrange it to fend off a specified AI attack?

I think the AI attacks would be a great addition to the goblin campaign, but with the puzzles I think it takes away some of the freedom and fun of the game. Hope you agree, and thanks for sharing!

One obvious problem with this. The computer knows all the troop AIs and can find the EXACT perfect spot to attack your base and destroy it.